Engineering spin waves in a high-spin ultracold Fermi gas

Abstract

We report on the detailed study of multi-component spin-waves in an s=3/2 Fermi gas where the high spin leads to novel tensorial degrees of freedom compared to s = 1/2 systems. The excitations of a spin-nematic state are investigated from the linear to the nonlinear regime, where the tensorial character is particularly pronounced. By tuning the initial state we engineer the tensorial spin-wave character, such that the magnitude and sign of the counterflow spin-currents are effectively controlled. A comparison of our data with numerical and analytical results shows excellent agreement.

9 pages, 4 figures

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• Universal Spin Transport and Quantum Bounds for Unitary Fermions
• Controlling Rydberg atom excitations in dense background gases
• Experimental Realization of a Relativistic Harmonic Oscillator
• Breaking inversion symmetry in a state-dependent honeycomb lattice: Artificial graphene with tunable band gap
• Investigation of Feshbach Resonances in ultra-cold 40 K spin mixtures
• Dispersive probing of driven pseudo-spin dynamics in a gradient field
• Relaxation dynamics of an isolated large-spin Fermi gas far from equilibrium
• The Local Spin Structure of Large Spin Fermions
• Magnetic phases and phase diagram of spin-1 condensate with quadrupole degrees of freedom
• Nonlinear spin diffusion and spin rotation in a trapped Fermi gas
• Resonant Spin Exchange between Heteronuclear Atoms Assisted by Periodic Driving
• Longitudinal spin diffusion in a nondegenerate trapped ${}^{87}$Rb gas
• Path Integral Monte Carlo study of particles obeying quantum mechanics and classical statistics
• Spin-orbit coupled repulsive Fermi atoms in a one-dimensional optical lattice
• Exploring kinetically induced bound states in triangular lattices with ultracold atoms: spectroscopic approach
• Zero sound in a quantum gas of spin-3/2 atoms with multipole exchange interaction